Finding the Third Proportional to 551,169 and 780,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   551,169 : 780,124.50 = 780,124.50 : x
2. Step 2: Convert to fraction form
   551,169/780,124.50 = 780,124.50/x
3. Step 3: Cross multiply
   551,169x = 780,124.50 × 780,124.50
4. Step 4: Simplify right side
   551,169x = 608,594,235,500.25
5. Step 5: Solve for x
   x = 608,594,235,500.25/551,169
6. Step 6: Final answer
   x = 1,104,188.07